Prove using mathematical induction that for all n≥1. 1+4+7+....+(3n-2)=n(3n-1)÷2

Prove using mathematical induction that for all n≥1. 1+4+7+....+(3n-2)=n(3n-1)÷2
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Prove using mathematical induction that for all n≥1. 1+4+7+....+(3n-2)=n(3n-1)÷2
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